What are Rails controllers and how do they work?

What are Rails controllers and how do they work?

Rails controllers are components in the Ruby on Rails framework that handle incoming web requests, process them, and return responses. They act as intermediaries between the models and views.

Can you give me an example of a simple controller?

Sure! Here's a simple example of a controller in Rails:

class ArticlesController < ApplicationController
  def index
    @articles = Article.all
  end

  def show
    @article = Article.find(params[:id])
  end
end

This controller has two actions: index to list all articles and show to display a specific article.

What are the common actions in a Rails controller?

Common actions in a Rails controller include index, show, new, create, edit, update, and destroy. These correspond to the typical CRUD operations.

How do I set up routes for my controller?

You can set up routes in the config/routes.rb file. For example:

resources :articles

This will create all the standard routes for the ArticlesController.